DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (b6d82b1a6b02)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_SessionStoreListener_h
#define mozilla_dom_SessionStoreListener_h

#include "nsIDOMEventListener.h"
#include "nsIPrivacyTransitionObserver.h"
#include "nsIWebProgressListener.h"
#include "SessionStoreData.h"

class nsITimer;

namespace mozilla {
namespace dom {

class ContentSessionStore {
 public:
  explicit ContentSessionStore(nsIDocShell* aDocShell);
  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(ContentSessionStore)
  NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(ContentSessionStore)

  void OnPrivateModeChanged(bool aEnabled);
  bool IsDocCapChanged() { return mDocCapChanged; }
  nsCString GetDocShellCaps();
  bool IsPrivateChanged() { return mPrivateChanged; }
  bool GetPrivateModeEnabled();
  void SetScrollPositionChanged() { mScrollChanged = WITH_CHANGE; }
  bool IsScrollPositionChanged() { return mScrollChanged != NO_CHANGE; }
  void GetScrollPositions(nsTArray<nsCString>& aPositions,
                          nsTArray<int32_t>& aPositionDescendants);
  void SetFormDataChanged() { mFormDataChanged = WITH_CHANGE; }
  bool IsFormDataChanged() { return mFormDataChanged != NO_CHANGE; }
  nsTArray<InputFormData> GetInputs(
      nsTArray<CollectedInputDataValue>& aIdVals,
      nsTArray<CollectedInputDataValue>& aXPathVals);
  void OnDocumentStart();
  void OnDocumentEnd();
  bool UpdateNeeded() {
    return mPrivateChanged || mDocCapChanged || IsScrollPositionChanged() ||
           IsFormDataChanged();
  }

 private:
  virtual ~ContentSessionStore() = default;
  nsCString CollectDocShellCapabilities();

  nsCOMPtr<nsIDocShell> mDocShell;
  bool mPrivateChanged;
  bool mIsPrivate;
  enum {
    NO_CHANGE,
    PAGELOADEDSTART,  // set when the state of document is STATE_START
    WITH_CHANGE,      // set when the change event is observed
  } mScrollChanged,
      mFormDataChanged;
  bool mDocCapChanged;
  nsCString mDocCaps;
};

class TabListener : public nsIDOMEventListener,
                    public nsIObserver,
                    public nsIPrivacyTransitionObserver,
                    public nsIWebProgressListener,
                    public nsSupportsWeakReference {
 public:
  explicit TabListener(nsIDocShell* aDocShell, Element* aElement);
  nsresult Init();
  ContentSessionStore* GetSessionStore() { return mSessionStore; }
  // the function is called only when TabListener is in parent process
  bool ForceFlushFromParent(uint32_t aFlushId, bool aIsFinal = false);
  void RemoveListeners();
  void SetEpoch(uint32_t aEpoch) { mEpoch = aEpoch; }
  uint32_t GetEpoch() { return mEpoch; }

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(TabListener, nsIDOMEventListener)

  NS_DECL_NSIDOMEVENTLISTENER
  NS_DECL_NSIOBSERVER
  NS_DECL_NSIPRIVACYTRANSITIONOBSERVER
  NS_DECL_NSIWEBPROGRESSLISTENER

 private:
  static void TimerCallback(nsITimer* aTimer, void* aClosure);
  void AddTimerForUpdate();
  void StopTimerForUpdate();
  bool UpdateSessionStore(uint32_t aFlushId = 0, bool aIsFinal = false);
  virtual ~TabListener();

  nsCOMPtr<nsIDocShell> mDocShell;
  RefPtr<ContentSessionStore> mSessionStore;
  RefPtr<mozilla::dom::Element> mOwnerContent;
  bool mProgressListenerRegistered;
  bool mEventListenerRegistered;
  bool mPrefObserverRegistered;
  // Timer used to update data
  nsCOMPtr<nsITimer> mUpdatedTimer;
  bool mTimeoutDisabled;
  int32_t mUpdateInterval;
  uint32_t mEpoch;
};

}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_SessionStoreListener_h